Morganit
Morganit är en rosa variant av beryll.[1] Den rosa färgen på morganit tillskrivs Mn2+-joner.[2] Morganit är pleokroisk; när den ses längs sin kristallografiska axel är färgen mer rosa. Morganit bryts i Brasilien, Afghanistan, Madagaskar, Moçambique, Namibia och USA.[3]
Morganit är också känd som rosa beryll, rosa smaragd och "cesisk (eller caesisk) beryll".[2]
Morganit förekommer oftast som korta eller tjocka prismor. Morganit är en dikroitisk ädelsten. Det första fyndet av morganit gjordes på Madagaskar. Från början kallades denna ädelsten för rosa beryll, alternativt något av de äldre namnen rosterit, vorobievit eller worobieffit. De länder där de flesta fyndorterna för morganit finns är Brasilien, Madagaskar, Moçambique, Pakistan och USA.[4]
Namnet
Stenen har fått sitt namn från den amerikanske bankiren och ädelstensentusiasten J. P. Morgan, Jr..[5]
Popularitet
Morganit har vuxit i popularitet sedan 2010.[1] Tidskriften Brides och CNN har till och med listat det som ett bra alternativ till diamant.[6][7]
Egenskaper
I jämförelse med smaragd saknar morganit inklusioner och frakturer, vilket gör den mer hållbar än smaragd.[1]
Historia
Rosa beryll av fin färg och bra storlek upptäcktes först på en ö utanför Madagaskars kust 1910.[8] Det var också känt, tillsammans med andra ädelstensmineraler, såsom turmalin och kunzit, i Pala, Kalifornien. I december 1910 döpte New York Academy of Sciences den rosa varianten av beryll till "morganite" efter finansmannen J. P. Morgan.[8]
Den 7 oktober 1989 hittades ett av de största morganitexemplaren av ädelsten som någonsin upptäckts, så småningom kallat "The Rose of Maine", vid Bennett Quarry i Buckfield, Maine, USA.[9]
Popularitet och värde
Före 2011 var morganit okänd i många smyckesbutiker, men har senare ökat i popularitet.[1]
Enligt en undersökning från 2017 är morganit den näst mest populära icke-diamanten, efter safir. En enda karat morganit kan kosta cirka 300 dollar.[10]
Morganit är en av de sällsynta medlemmarna i beryllfamiljen, näst efter bixbit. På grund av bristen på morganiter, särskilt de av hög kvalitet, tenderar de att vara bland de dyraste per karat.[5] De som är djupt rosa till färgen tenderar att vara de mest värdefulla.[11]
Galleri
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Referenser
- Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, Morganite, 25 maj 2023.
Noter
- ^ [a b c d] ”Morganite: The orange to pink gem with growing popularity” (på engelska). geology.com. https://geology.com/gemstones/morganite/. Läst 21 augusti 2023.
- ^ [a b] ”Color in the beryl group” (på engelska). minerals.caltech.edu. California Institute of Technology. Arkiverad från originalet den 22 augusti 2011. https://web.archive.org/web/20110822012424/http://minerals.caltech.edu/FILES/Visible/BERYL/Index.htm. Läst 21 augusti 2023.
- ^ ”Morganite Description” (på engelska). www.gia.edu. https://www.gia.edu/morganite-description. Läst 21 augusti 2023.
- ^ morganit ”Morganit”. förlovningsringar.se. https://www.förlovningsring.se/adelstenar morganit. Läst 21 augusti 2023.
- ^ [a b] Oldershaw, Cally (2003) (på engelska). Firefly Guide to Gems. Firefly Books. sid. 128. ISBN 978-1-55297-814-6. https://books.google.com/books?id=wm_X_LzoN-cC&q=morganite&pg=PA128
- ^ ”8 Diamond Alternatives to Consider for Your Engagement Ring” (på engelska). Brides. https://www.brides.com/diamond-alternatives-5186406. Läst 21 augusti 2023.
- ^ Murden, Banu Ibrahim,Kiana (18 maj 2021). ”Planning to propose? Here are 23 expert-approved rings worth buying” (på engelska). CNN Underscored. https://www.cnn.com/2021/05/18/cnn-underscored/best-engagement-rings/index.html. Läst 21 augusti 2023.
- ^ [a b] ”Gem named for Morgan; Newly discovered pink beryl is to be known as Morganite” (på engelska). The New York Times. 6 december 1910. https://timesmachine.nytimes.com/timesmachine/1910/12/06/102052382.pdf. Läst 21 augusti 2023.
- ^ Harrison, Donald K.; Anderson, Walter; Foley, Michael E. (1990). ”The Mineral Industry of Maine”. Minerals yearbook 1990. "2". US Bureau of Mines. Sid. 237. ISBN 978-0-160-38183-6.
- ^ Keiles, Jamie Lauren (4 december 2018). ”The pink engagement ring gemstone that everyone is buying but nobody is talking about” (på engelska). Vox. https://www.vox.com/the-goods/2018/12/4/18126188/morganite-engagement-ring-gemstone-diamond-alternative. Läst 21 augusti 2023.
- ^ Grande, Lance; Augustyn, Allison (2009-11-15) (på engelska). University of Chicago Press. sid. 131. ISBN 978-0-226-30511-0. https://books.google.com/books?id=RnE9Fa4pbn0C&q=Morganite&pg=PA131
Wikimedia Commons har media som rör Morganit.
Media som används på denna webbplats
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Beryl (Var.: Morganite)
- Locality: Araçuaí, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org)
- This stunning, unique gem morganite specimen was released from the personal collection of a Brazil-based collector/dealer who was able to cherry-pick specimens from the prolific production out of Minas Gerais over the years. It was by far the most unique specimen I found at the show, and is just incredibly striking. Two flattened, hexagonal gem morganite crystals have grown side-by-side, and inside each of them is a sharp, hexagonal phantom ROTATED ON ITS AXIS by 30 degrees or so from the crystallography of the enveloping morganite! The faces on the bottom and back right side of the specimen are slightly incomplete due to removal from the pocket, but as you can see, the specimen can be displayed to minimize this and really you don't see the slightly rough rear-right edge anyhow. Just one crystal like this would be fascinating, but this piece consists of TWO matching crystals that formed side by side under the same unique pocket conditions, showing the same phantom growth inside with the same rotational offset! I have never seen anything quite like this, in ANY species. 4.8 x 3.4 x 1.7 cm
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Albite, Beryl, Schorl
- Locality: Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org)
- Size: large cabinet, 17 x 11 x 6.5 cm
- Morganite with Albite on Schorl
- This pegmatite has produced arguably the best and largest number of fine morganites in the world from any one small find, back about 30 years ago now. This is a HUGE specimen with so much color and impact, because of the size, that it seems fake at first! It masses/weighs just over a kilo. The crystal measures 10 x 8.5 cm , is 3.5 cm or 1.75 inches thick, and is complete all around. It has a minor indentation on the left side, that is crystallized in faces with attached albite blades over them. There are a few small spots of roughness in the front face that were filled with gap-fill epoxy (its there, but in context of size and overall impact minimal). The white spot at the base of the crystal is part of the matrix that grows up into the crystal or vice versa, and is albite as well, though massive and not crystallized. This specimen is translucent to transparent throughout, highly lustrous, and a rich pink-lavender color that is distinctly Urucum's own hue. Classically, you want these to be associated with schorl but not drowned out by the schorl - too many are actually so included they look gray or ugly. This one has just enough schorl on it to accent without taking away from the pink gemminess and transparency, the black on pink making for a better piece. More importantly, this crystal stands miraculously UPRIGHT on a matrix of solid intergrown schorl and albite! Ok, its not a miracle, but rather an excellent trim job by one of our friends. Because of its wonderful display aesthetics, this one whopper of a morganite, both literally and figuratively, for ANY locale. IT IS MUCH BETTER IN PERSON! Comes with custom lucite base for easy display.
Författare/Upphovsman: Wikipedia Loves Art participant "Assignment_Houston_One", Licens: CC BY-SA 2.5
Morganite, Sapphire and Diamond Necklace
Designed and created by Ernesto Moreira
Houston, TX
2006
Platinum necklace with a large morganite (68.80 carats) as its center stone (1.91 carats) of pave diamonds, (2.88 carats) of pear-shaped diamonds and (11.01 carats) of pink pear-shaped sapphires.
This photo of item # 2006.1761.01 at the Houston Museum of Natural Science was contributed under the team name "Assignment_Houston_One" as part of the Wikipedia Loves Art project in February 2009.
Houston Museum of Natural Science
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Beryl
- Locality: Stewart Mine, Butte, Butte District, Silver Bow County, Montana, USA (Locality at mindat.org)
- Size: cabinet, 9.5 x 7.6 x 5.3 cm
- Beryl var. Morganite (illustrated in Barlow book)
- This morganite specimen would fetch a premium from ANY locality - it is not priced high without merit, aside from provenance, in other words. The crystal is 5 cm across and glassy, with a unique scalloped surface termination I have only rarely seen on beryls, and on none other from San Diego County that i can recall. Note that this is, as a bonus, from the STEWART MINE and not from the more famously known White Queen. The piece was probably found prior to 1960, I am told. It is, in person, highly uniique and interesting. The book photo shows neither the lustre or the color, in their efforts to nail down the look of the termination. In person it is sa lustrous as in the top-right photo, closer to the color as shown in the lower-left photo, and with the gemminess shown in the lower-right photo if you can merge all of those shots in your imagination. The specimen was illustrated with his beryls on page 137 of the Barlow Collection book (1998). Barlow sold the collection in 1998 and this piece disappeared into the private collection of Lawrence Conklin. Until I got ahold of it, the piece had NEVER been cleaned and so this is the reason it sparkles more now compared to the book photo in which the matrix looks more gray than white.
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Beryl (Var.: Morganite)
- Locality: White Queen Mine, Hiriart Mountain (Heriart; Heriot; Hiriat Hill), Pala District, San Diego County, California, USA (Locality at mindat.org)
- Size: 5.5 x 5.2 x 3.9 cm.
- A gorgeous pink, gemmy and lustrous, euhedral morganite crystal from the White Queen Mine of California. This fine crystal is from the personal collection of Norm Dawson, who owned and operated the White Queen from the 1948-1992. One face is water-clear, one face is water-clear and very lightly frosted, three faces are etched and one face is contacted. The crystal has classic, rich color and form. Weighs 191 grams.
I took this photo with my digital camera. Its a morganite gemstone from the inventory of the jewelry store I work at. I release it for use on Wikipedia.
Författare/Upphovsman: DonGuennie (G-Empire The World Of Gems), Licens: CC BY-SA 4.0
Faceted Morganite, 2.01ct, Brazil